The pursuit of innovative and safe hair color solutions is a constant endeavor in the cosmetic industry. HC Blue No. 11, a compound with the chemical name 2-[N-(2-hydroxyethyl)-4-(2-methoxyethylamino)-3-nitroanilino]ethanol and CAS number 23920-15-2, plays a significant role in this innovation. Its molecular formula (C13H21N3O5) and a molecular weight of 299.32300 are foundational to its function as a key ingredient in various hair dye formulations.

HC Blue No. 11 is recognized for its application in semi-permanent and permanent hair coloring systems. Its ability to act as a direct dye means it imparts color without requiring complex chemical reactions with other components, simplifying formulation and enhancing predictability. The requirement for high purity, specifically ≥99.0% by HPLC, ensures that the dye performs consistently and safely, minimizing the risk of adverse reactions or inconsistent color results. This commitment to purity is a cornerstone of developing trusted hair care products.

Safety is a paramount concern in the cosmetic industry, and HC Blue No. 11 is subject to regulatory assessments. While the provided information doesn't detail specific safety evaluations for this exact compound, the industry's general approach involves rigorous testing for skin irritation, sensitization, and other potential health impacts. Manufacturers like Ningbo Inno Pharmchem Co., Ltd. ensure that their products meet established quality standards, including controlled levels of ash (≤1.0%), loss on drying (≤1.0%), and iron content (≤100ppm), which contribute to the overall safety and stability of the final product.

The physical properties of HC Blue No. 11, such as its appearance as a dark brown powder, and its handling requirements, like storage in a cool, ventilated place, are practical aspects that formulators must consider. Packaging, typically in 25 kg drums, also plays a role in logistics and usage efficiency. By understanding these facets, cosmetic chemists and product developers can effectively integrate HC Blue No. 11 into their product lines, driving innovation in hair coloring while upholding the highest standards of safety and quality, supported by reliable suppliers.